The 3.2 km long Escorts Mujesar – Raja Nahar Singh (Ballabhgarh) section of the Kashmere Gate – Escorts Mujesar corridor also known as the Violet Line is now ready for passenger operations. This extension of Delhi Metro's Violet Line consists of two stations – Sant Surdas (Sihi) and Raja Nahar Singh. Ballabhgarh has become the fourth city in Haryana to get Metro connectivity after Gurugram, Faridabad and Bahadurgarh. After the opening of this extension, the entire Kashmere Gate – Raja Nahar Singh Metro corridor will become 46.6 kilometres long.

Currently, 25.8 km of Metro lines are operational across Haryana. After the opening of this section, the total length of Metro kilometres in Haryana will become 29 kilometres. All trains running on this section are manufactured in India.

The work of this section of Metro Line was started in February, 2015. The Escorts Mujesar – Raja Nahar Singh (Ballabhgarh) section will be extremely crucial from the point of view of connectivity for the city of Ballabhgarh, Faridabad, South-East Delhi and Central Delhi areas. Ballabhgarh is an upcoming urban settlement which is an industrial city. Large numbers of people travel every day for their professional requirements from Ballabhgarh to Delhi and vice-versa. This corridor will be of help to these people.

The Raja Nahar Singh Station in Ballabhgarh would now connect Ballabhgarh Interstate Bus Terminal and Ballabhgarh Railway Station. This station is five storey building having two commercial floors above track level. This station is having parking on the other site of the National Highway–2 which will be directly connected to the station via a Foot Over Bridge. Similarly, Sant Surdas (Sihi) Station has been set up near National Council for Cement and Building Material Institute. Lifts and escalators facility has been provided on both stations.